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Finding the Fourth Proportional to 114.16, 170.39 and 106.13

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Solution

The fourth proportional to 114.16, 170.39 and 106.13 is: 158.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.16 : 170.39 = 106.13 : x
  2. Step 2: Convert to fraction form
    114.16/170.39 = 106.13/x
  3. Step 3: Cross multiply
    114.16x = 170.39 × 106.13
  4. Step 4: Simplify right side
    114.16x = 18,083.76
  5. Step 5: Solve for x
    x = 18,083.76/114.16
  6. Step 6: Final answer
    x = 158.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.